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laila [671]
3 years ago
14

How do tou do it I xo not under stand

Mathematics
1 answer:
iren [92.7K]3 years ago
4 0
For x > 2, you would circle the 2, but you would not shade it in because it is greater than/ less than, not greater than or equal to/less than or equal to. From there on, you would move it to the right, because here x is greater than 2, and the numbers to the right of 2 are greater than two.

For x < 2, you would again circle the 2, but don't shade it in. And then you would make a line heading towards the left, because the numbers to the left of 2 are smaller than 2, and here, x is smaller than 2, since 2 is greater.

A value that is not the solution to either inequality is 2. 2 is not greater than 2, and 2 is not less than 2.
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Solve x^2 - 4x - 7 = 0 by completing the square. What are the solutions?
sergejj [24]

Answer:

x = ±√11 +2

Step-by-step explanation:

Given in the question an equation,

x²- 4x - 7 = 0

Step 1

take 7 to the right side of equation

x²- 4x = 7

Step 2

To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of b, the coefficient of x

2ab = -4x

2xb = -4x

b = -2

Step 3

Take square of b and add it to each side of the equation.

x²- 4x + (-2)²= 7 + (-2)²

x²- 4x + 4 = 7 + 4

x²- 4x + 4 = 11

Step 4

Factor the perfect trinomial square

(x−2)² = 11

Step 5

take square root on both sides

√(x−2)² = √11

(x-2) = ±√11

x = ±√11 +2

8 0
4 years ago
Read 2 more answers
For every car you sell, you get a 6% commission. IF your total sales for the month is $125,650, what is your commission?
Lera25 [3.4K]
Let
x= total cost of cars
y= total commission paid out for all cars sold

6%= 6/100 = .06

Set up an equation:
y= .06(x)

Given: x= $125,650

substitute into the y= .06(x)

multiply $125,650 by .06.

The answers would be: 7539


hope this helped :)
3 0
3 years ago
Read 2 more answers
HI CAN SOMEONE PLS HELP ITS DUE IN 5 min pls help !!!
notsponge [240]

The question wants to determine BOTH at an amount of time.

Green lawn: 28x2=46+42=98 |    28x3=84+42=126

                                              |                

         These are incorrect       | These are correct

Yard guard: 34x2=68+ 24=92 |  34x3=102+24=126

So then 3 months and 126 dollars

3 0
3 years ago
List the members of P(fa, b, c, d}). Which are proper subsets of fa, b,c, d)?
ankoles [38]

Answer: As i understand, the set is P = {a,b,c,d}

then all the proper subsets are all the sets that belongs to P, that are different of P. Then A is a subset of P if all the elements of A belongs to P, but A is not equal to P

this is:

the sets of one element : {a}, {b}, {c}, {d} and the null set; ∅

sets of two elements: {a,b} , {a,c} , {a.d}, {b,c}, {b,d}, {c,d}

sets of three elements : {a,b,c}, {a,b,d}, {a,c,d}, {b,c,d}

and there arent sets of 4 elements or more.

6 0
3 years ago
A = -5 b= 7 <br> -2b + a<br><br> ( Worth 10 points)
Nesterboy [21]
The answer is -19....
3 0
3 years ago
Read 2 more answers
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